{% setvar book_path %}/reference/androidx/_book.yaml{% endsetvar %} {% include "_shared/_reference-head-tags.html" %}

Checks

public final class Checks

Substitute for Guava Preconditions to avoid guava as a dep.

Summary

Public constructors
`Checks()`

Public methods
`static void`	`checkArgument(boolean expression)`
`static void`	`checkArgument(boolean expression, Object errorMessage)`
`static void`	`checkArgument( boolean expression, String errorMessageTemplate, Object[] errorMessageArgs )`
`static T`	`<T> checkNotNull(T reference)`
`static T`	`<T> checkNotNull(T reference, Object errorMessage)`
`static T`	`<T> checkNotNull( T reference, String errorMessageTemplate, Object[] errorMessageArgs )`
`static void`	`checkState(boolean expression, Object errorMessage)`
`static void`	`checkState( boolean expression, String errorMessageTemplate, Object[] errorMessageArgs )`

public final Checks()

public static void checkArgument(boolean expression)

public static void checkArgument(boolean expression, Object errorMessage)

public static void checkArgument(
    boolean expression,
    String errorMessageTemplate,
    Object[] errorMessageArgs
)

public static T <T> checkNotNull(T reference)

public static T <T> checkNotNull(T reference, Object errorMessage)

public static T <T> checkNotNull(
    T reference,
    String errorMessageTemplate,
    Object[] errorMessageArgs
)

public static void checkState(boolean expression, Object errorMessage)

public static void checkState(
    boolean expression,
    String errorMessageTemplate,
    Object[] errorMessageArgs
)